In other words those necessary periods of repose are a source of true enjoyment, because, thanks to them, we enjoy the delight of recollection which increases twofold the reality of happiness.

Man can be happy only when in his own mind he realizes his happiness, and calm is necessary to give full play to his mind; therefore without calm man would truly never be completely happy, and pleasure, in order to be felt, must cease to be active.

Then what do they mean by that word lasting?
"Every day we reach a moment when we long for sleep, and, although it be the very likeness of non-existence, can anyone deny that sleep is a pleasure?
No, at least it seems to me that it cannot be denied with consistency, for, the moment it comes to us, we give it the preference over all other pleasures, and we are grateful to it only after it has left us.
"Those who say that no one can be happy throughout life speak likewise frivolously.

Philosophy teaches the secret of securing that happiness, provided one is free from bodily sufferings.

A felicity which would thus last throughout life could be compared to a nosegay formed of a thousand flowers so beautifully, so skillfully blended together, that it would look one single flower.